1,947.9km since 18th February 2009

I was looking at my polar 200cad heart rate monitor. Since 18th February 2009, I hv cycled a total of 1,947.9kms - 1,748.0km on my Cervelo SLC SL and 199.0km on my Specialized Rockhopper. My max speed of 63kph was achieved on 21st February 2009 at Terkala - must be the downhill just before the stop at Tekala. However, my record speed was 68.3kph achieved at same place sometime last year.
Total riding time was 119hrs - or 4 days 22 hours 48mins of cycling burning a total of 58,951calories in the process or 7.65kg of fat. but how come my weight reduces by only 2kg over the same period! cos the input is much much greater than 58,951 calories lost.
I guess i hv to ride more and enjoy the scenery n might as well enjoy the FOOD .....